Joseph b



(No Model.) l

, l J. B. DOCKBRY.

GOMBINATION SOFT AND HARD METAL PIPE GOUPLING.

Patented May 4, A897'.

l mmmmmwXfW' ing the means employed to flare the end of a and providedon its exterior, at a point inter- NiTED STATES PATENT OFFICE..

JOSEPH B. DOCKERY, OF ST. LOUIS,

MISSOURI, ASSIGNOR OF ONE-HALF *STO J. GILMAN CHOUTEAU, OF SAME PLACE.

SPIE()IFIATIQN forming part of Letters Patent No. 582,137, dated May 4,1897.

Application tlled'August 12,1895. Serial No. 559,039. (No model i To allwhom it 71mg concer/L:

Be it known that I, JOSEPH B. DOCKERY, of thecity of St. Louis, State ofMissouri, haveV invented certain new and useful Improvements in aCombination Soft and Hard Metal Pipe Coupling, of which the following isa full, clear, and exact description, reference being had to theaccompanying drawings, formiu g a part hereof. l y

My invention relates to' a combination soft and hard 'metal pipecoupling; and it consists in the novel construction, combination, andarrangement of parts hereinafter described and claimed.

My present invention is supplementary to and should be read inconnection with my invention shown in United States Letters Patent No.5%),902, dated Novemberll, 1895, and filed concurrently herewith. i Y

In the patent above cited I show and claim means of forming an air andWater tight joint between the meeting ends of soft-metal or lead pipe.In my present invention I show means of forming an air and watertightjoint between iron and lead pipe.

In the drawings, Figure 1 is 'a longitudinal sectional View of themeeting ends of hard and soft met-al pipe, the same being joined by myimproved coupling.- Fig. 2 is a cross-sectional view taken approximatelyon the indi-` cated line 2 2 of Fig. l. Fig. 3 is aside ele` vation ofthe male part of myimproved coupling. Fig.A 4. is a side elevation ofthe packing-ring or washer of which I make use in carrying out myinvention. Fig. 5 is a front elevation thereof. Fig. 6 is a viewillustratsoft-metal pipe that is to be joined by my improved coupling toa hard-metal pipe.

Referring by numerals tothe accompanying drawings, 1` indicates thefemale part of the coupling, `the same being of tubular forni mediateits ends, with a series of faces 2, on which a Wrench or like tool maybe located. Arranged within the female part l at a point intermediateits ends is a diaphragm 3, in which is formed a centrally-arrangedaperture 4. The interior of the femalepart 1 to oneside of the diaphragm3 is screwthreaded,

as indicated by 5, and theinterior of the female Vin whichthescrew-threads 6 are located is a tube 7, and arranged upon saidprotruding end of the tube 7 is a flexible packing-ring 8, the samecomprising a hemispheri-cal body of materiafhaving a centrally-arrangedaperture 9 therein. y

10 indicates the male part of the coupling,

part 1 on the opposite sideof the diaphragm.

the same being in the form of Va tube, the outer Y exterior end beingprovided with a series of faces 11, von which may be located a wrench orlike tool. The remaining exterior portion of this male part of thecoupling is sc'rewthreaded, as indicated by the numeral 12, saidscrew-threaded portion being of such a size as that it may bereadi-lyflocated in the screw-threaded interior of the female part l ofthe coupling.

13 indicates the soft-metal and 14. the hardmetal pipe. The end of thehard-metal pipe 1i is exteriorly screw-threaded and arrangedto belocated in the screw-threaded end 5 of the female part 1 of thecoupling. The end of the soft-metal pipe 13 is curved outwardly,

as indicated by 15, this being done by a specially-formed tool 16.

Previous to eecting a coupling'by my improved means the lnale part l0 islocated upon the end of the soft-metal pipe 13 in such a manner as thatthe end of said soft-metal pipe 13 prot-rudes a slight distance abovesaid male part 10. The stem of the tool 1 6 is now located within theprotruding end of the softmetal pipe 13 and by the repeated blows of ahammer upon the upper end of the tool the end of the pipe 13 will beflared outwardly to conform with the curved inner edge of the end ofsaid male part 10. After the end of the hard-metal pipe has been locatedin the screw-threaded interior 5 of the female part 1 andthe male part10 has been located upon the end of the soft-metal pipe 13 and the endof said soft-metal pipe has been iiared the male part l0 is started intothe screw-threaded IOO interior 6 of the female part 1.l By means of awrench or like tool. locatedupon the faces 11 of said maleipart the sameis passed into the screw-threaded interior 6 until the flared ,end 15 ofthe soft-metal pipe 13 is very tightly engaged upon the exterior of thehemispher- -ical packing-ring 8, thus forming a perfectly air and watertight joint between said flared/- end and packing. i f By locating anintegral diaphragm within the female part of the coupling and arrangingthe tube 7 Within said diaphragm the flexible packing is prevented fromcollapsing or being forced together when the male part 10 is tightenedwithin the female partvl.

VA pipe-coupling constructed in accordance I and soft metal pipe.

'Iclaim-, The within-described means of forming an' air and watertight.joint between the meeting ends of iron and lead pipe, which meansconsists of the femalev member 1, the diaphragm 3 centrally arrangedWithin said member and having the aperture 4 centrally located withinsaid diaphragm, one end of said member 1 being screw-threaded anddesigned t-o receive the screw-threaded end of the iron pipe and theopposite end of said member 1 being screw-threaded and designed toreceive the male part 10 of the coupling, the tube 7 located in saidaperture land extending into the end of said male member 10 and theflexible packing-ring 8 located upon said protru'd ing end of said tube7, the coupling being de# signed/to receive the ared end of the leadpipe around said tube 7 and press it against said packing-ring by theoperation of said male member 10.

In testimony whereof `I affix my signature y in presence of twoWitnesses.

l JOSEPH B. DOCKERY. Witnesses:

EDWARD E. LONGAN, MAUD GRIFFIN.

